{{$a}}
<hr>
{{$data['username']}}
<hr>
{{$data['url']}}
<hr>
{{$news['title']}}
<hr>
{{$url}}
<hr>
{{'abc'.'你好后盾'}}
<hr>
{{strtoupper('houdunren')}}
<hr>
{{clientIp()}}
<hr>
@{{$_GET['s']}}
<hr>
@{{$a}}
<hr>
@{{p($_SERVER)}}